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Local calculation
Entered values never leave your device.
Entered values never leave your device.
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How the calculation works
Calculate the time constant and approximate capacitor charging time. The tool converts the form units and presents the result using readable engineering notation.
τ = R × C
Example
10 kΩ and 100 µF gives τ = 1 s; about 5τ means nearly full charge.
How to interpret the result
- One time constant represents about 63% of the voltage change during charging.
- After five time constants the circuit is very close to its final value.
- Source and load resistance change the effective R.
Limitations and safe use
The result uses a simplified model. Check tolerance, temperature, absolute ratings and the component datasheet.
FAQ
Is the result saved?
The latest result may be stored locally in this browser, but it is not sent to LutujTo.
Can I use the result in a project?
Yes, but select a real component with margin and confirm its ratings in the datasheet.